Method of building hollow-wall constructions



March, 1, i927.

1,619,570 H. A. DUCHEMIN METHOD 0F BUILDING HOLLOW WALL CONSTRUCTIONS me@ om. 1s. 1924 M 'ln Patented Mar. 1, 1927.

UNITED STATES HOWARD A. DUCHEMIN, OF LOS ANGELES, CALIFORNIA.

METHOD OF BUILDING yHOLLOW-VALL CONSTRUCTIONS.

` Application filed October 13, 1924. Serial No. 743,337.

This invention relates to improvements Ain methods for building hollow wall constructions.

It is an object of this invention to provide a method whereby a hollow wall may be easily, cheaply and quickly constructed. The method consists essentially of forming` the hollow wall in a substantially horizontal position, and after the hollow wall has become cured, elevating it into its vertical position,

lVith the foregoing and other objects in view which will be made manifest in the following detailed description and pointer out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, wherein Figure 1 is a perspective view showing the initial steps in constructing the hollow wall,

Fig. 2 is a perspective view showing vthey wall as having been further formed,

Fig. 3 isa perspective View showing the wall in its upright position,

Fig. 4 is a vertical section taken substantially on the line 4 4 of Fig. 3, and

Fig. v5 is a horizontal section taken substantiallj;7 on the line 5-5of Fig. 3.

Referring to the accompanying drawings wherein similar reference characters designate similar parts throughout, it will be understoodthat the hollow wall may be formed on any substantially horizontal flat surface. In the drawings I have illustrated the wall as being formed upon a platform formed by suitable planks 1() supported upon suitable struts 11. A pair of end rails 12 are placed upon the platform and serve to delinethe width of the section of wall to be formed. Apair of rails 13 are also placed upon the platform and serve to define the height of a wall section to be formed. The rails 13 are of a depth equal to the thickness of one face of the wall.

Between the end rails 12 and the rails 13,

concrete is pour-ed and leveled off even with i the tops of the rails 13. This material proe videsfor one face of the hollow wall. Vhen this has been completed, suitable wedges 14, which may be in the form of planks wedgeshaped in cross section or may be simply small wedges of a few inches in breadth, are placed upon the rails 13 at various intervals. Center pieces 15 which carry suitable` stringers 1G secured upon their sides are placed upon the wedges 14 as illustrated in Fig. 2. Side pieces 17 which are provided with similar stringers 18 are also laid upon the rails 13. Top pieces 19 vwhich ,mayy be in the form of planks are then placed between the center pieces 15 and the sidepieces 17 and rest upon the pieces 16 and 18. The wedges 14, the center pieces 15, the side pieces 17, and the top pieces 19 allconstitute a plurality of separate collapsible forms which provide for openings extending longitudinally through the wall. Concrete or other plastic material is thenpoured about the forms so provided so as to till the openings left between adjacent side pieces 17. Additional concrete or similar material is then poured Vupon the top of the forms, at 20, and is leveled oit' so as to provide the other Vface of the wall of desired thickness.

It will Vreadily be understood that the ends of the openings provided'between the adjacent side pieces 17 maybe yclosed by suitable blocks, o'rin any other convenient manner, which will prevent the concrete or plastic materialr from running' out ofthe openingsy between the side pieces 17, and keeping the top material 2O from ruiming oii from the platform. ln the present instance, suitable planks, yas at 2l, are secured over the rails 13' which close the opening between the side pieces 17V andcooperatey with the end rails 12y to prevent the lop concrete 2O from vblowing oit frolnthe platform.

The wall so formed is allowed to set and the become cured; and after this has been .done,' c

the pieces 2l, the cndrails 12 andthe rails 13 are all removed. Y rails 13, the wedges 14 are vknocked out` from under the center pieces 15, enabling the center pieces to fall and to be withdrawn from the openings providedy in the wall.'y After these center pieces 15 have been removed, the top pieces 19 may be withdrawn and the Before removing the side pieces 17 may be turned over flatw-ise tion, as shown in Fig. 3, either by jacks or a derrick, or any other suitable means. Vhen the wall is in its upright position, grout is poured into the openings provided in the wall so as to fill up the bottoms of these openings, asl indicated at 253.V By pouring the grout in the openings, a bind or tie is formed' betweenthe wall andthe surface upon which it rests. This grout also serves to aid in maintaining the wall in upright position.

As illustrated in Figs. 1 and`2, the faces of the wall, 23 and 24;, may be reinforced as by reinforcing wire 25 and 26. Suitable reinforcing rods 27 and 28 may also be provided which are preferably positioned above and below the webs 22. The reinforcing wires 25 and the reinforcing rods 27 may be positioned upon the platform and the concrete which is poured upon the platform to formithe face of the wall may be poured thereon, or the concrete may be firstA poured and the reinforcing material may then be imbedded therein.

It will readily be seen that the improved method of making a hollow wall consists essentially of forming the hollow wall in a substantially horizontal position and then raising the wall into its vertical position.

Y A window or door opening may be provided in the wall, as indicated upon the drawing, by merely placing small rails 30, which are the same depth as the end rails 13, upon the platform l() before pouring the face 23. When the Yface 23has been poured, thecollapsible forms are placed upon the end rails 13, as before, and these forms extend over the openingprovided by the rails 30. Rails 31 may be placed upon the collapsible forms and provide the opening in the face 24. The concrete is poured about the rails 30 and31 and when the wall has been poured and cured, these rails may be readily'removed, leaving the wall opening.

The various sections of the complete wall may be secured by providing suitable tie wires, as indicated at 32, upon the end faces of eachsection, which may be secured to tie 1 wires of adjacent sections. Concrete may be poured between the end faces of adjacent sections or if the crack or opening between these sections-is very small, the opening may be merely pointed up with a trowel.

It is to be understood that the collapsible forms may be made either of metal or of wood, and in the preferred construction, these forms are made of metal, for the reason that wood forms sometimes have the tendency to swell and cause trouble in the withdrawing of the forms from the openings in the wall.

It will be understood that various changes in the detail of construction may be made without departing from the. spirit or scope of the invent-ion as defined-by the appended claims.

I claim 1. The method of building a hollow wall which consistsv of pouring a slab of selfhardening plastic material in a substantially horizontal position, supporting a plurality of `rigid collapsible core forms at their ends in spaced parallel relation vover said slab, pouring self-hardeningplastic material between and over the core forms, collapsing and withdrawing the core forms when the material has set, and raising the wall from the horizontal position into a substantially vertical position. i

2. The method of building a hollow wall 80 which consists of pourin av slab of selfhardening plastic materia? upon a metallic reinforcement, so as to form a reinforced slab in an approximately horizontal position, supporting a pluralityV of rigid collapsible core forms at their ends in spaced parallel relation over said slab, pouring selfhardening plastic material between the core form, placing a metallic reinforcement over i the core forms, pouring a self-hardening plastic material over the core forms, imbeddiug the metallic reinforcement therein,thus forming a second reinforced slab which is disposed over the core forms and connected to the first reinforced slab, collapsing and removing the core forms when the material has set, and raising the wall from-the horizontal position into a substantially vertical. position.

3. The method of building hollow walls 100 which consists of pouringa slab of'selfhardening plastic material in asubstantially" horizontal position, supportinga plurality of rigid collapsible core forms at their ends in spaced parallel relation over said slab, 105 pouring self-hardening plastic material be-v tween and over the core forms, collapsing and withdrawing the core forms when the material has set, raising the wall from Vthe horizontal position into a. vertical position 110 in such a manner that the openings previ` ously occupied by the co're forms would be HOWARD A.. DUCHEMIN. 

